Maped Technic Compass 7 Piece Set's dual-action legs fold for safe and compact storage, and patented Stop System locks legs into position for use. Maximum circle diameter of 14". This 7 piece kit includes: compass, universal holder, 0.5mm mechanical pencil, lead sharpener, pack of leads, graphite pencil, and extension arm, all packed in a shatterproof clamshell case.